Perhaps you should try some spelling variations:
"coleccion cronica por." » "coleccion critica por.", "infeccion cronica por.", "coleccion juridica por.", "coleccion cronica con.", "coleccion cronica sobre.", "coleccion cronicas lom."
"coleccion 80ula norte." » "coleccion 80 norte.", "coleccion aulas norte.", "coleccion popular norte."
"coleccion aula norte." » "coleccion popular norte.", "coleccion al norte."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("coleccion 80ula norte.") or ("coleccion cronica por."))) or ("coleccion aula norte."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("coleccion 80ula norte.") OR ("coleccion cronica por."))) OR ("coleccion aula norte."))*.
• Removing quotes may allow a broader search: (((( coleccion 80ula norte. ) or ( coleccion cronica por. ))) or ( coleccion aula norte. ))*.